MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Massachusetts Institute of Technology
Data as of 2026-08-16
GLEIF verified
Complete entity footprint
2 linked clusters · 127 netblocks · 2,367,240 IPv4 addresses · 11 IPv6 prefixes
This organisation's clusters combined by evidence — shared GLEIF corporate family — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
LEI
DLZO3A31IADZ27B62557
Registered name
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Jurisdiction
US-MA
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks126 · 2,367,240 IPv4 addresses
IPv6 10 prefixes (largest 2603:4000::/24)
All fragments 139 blocks across 2 clusters
Cluster ID222381026
RegistryBGP
Owner jurisdictionUS-MA
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI DLZO3A31IADZ27B62557
Shared handles clustered on 29 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

8 weekly snapshots · JSON
138 +24 netblocks since 2026-07-05
2026-07-05 peak 138 2026-08-16

IP Ranges (126)

showing 50 of 126 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
4.21.160.8/29 Massachusetts Institute of Technology ARIN ASSIGNMENT ● high
18.0.0.0/11 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
38.97.116.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● high
128.30.0.0/16 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
128.31.0.0/16 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
128.52.0.0/16 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
129.55.0.0/16 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
129.55.201.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● high
192.5.135.0 – 192.5.141.255 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.5.136.0/22 Massachusetts Institute of Technology BGP ANNOUNCED ● high
192.5.140.0/23 Massachusetts Institute of Technology BGP ANNOUNCED ● high
192.12.11.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● high
192.12.127.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.12.252.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.12.253.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.12.254.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.12.255.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.16.181.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.26.95.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.26.149.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● high
192.26.150.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● high
192.35.134.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.35.135.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.35.136.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.35.137.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.52.61.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.52.62.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.52.63.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.52.64.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.52.65.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.52.66.0/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
192.54.222.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● high
192.233.95.0/24 Massachusetts Institute of Technology ARIN ASSIGNMENT ● high
2001:4830:2446::/48 Massachusetts Institute of Technology BGP ANNOUNCED ● high
2603:4000::/24 Massachusetts Institute of Technology ARIN DIRECT ALLOCATION ● high
18.0.0.0/16 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.1.0.0/16 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.0.0/16 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.1.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.2.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.3.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.4.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.5.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.6.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.7.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.8.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.9.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.10.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.11.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low
18.3.12.0/24 Massachusetts Institute of Technology BGP ANNOUNCED ● low

IPv6 ranges (10)

CIDR
2603:4000::/24
2603:4000::/32
2603:4001::/32
2603:4007::/32
2603:4008::/32
2603:4009::/32
2603:400a::/32
2603:4010::/32
2603:4011::/32
2001:4830:2446::/48

Domains hosted in this network

what's this?
mit.edu debian.org erikdemaine.org

Corporate group (2 confirmed entities)

Network trust

what's this?
RPKI hygiene: F how networks compare →
1.4% of checked blocks have valid RPKI ROA coverage (2 of 138)
No discrepancies found among checked blocks.

NIC Handles

AS133384 AS133524 AS3 AS395326 AS396527 AS63 BROWN2958-ARIN CSAIL-ARIN GOMES41-ARIN HAYST5-ARIN HAYST5-ARIN HAYST5-ARIN +17 more